805723673 has 2 divisors, whose sum is σ = 805723674. Its totient is φ = 805723672.

The previous prime is 805723669. The next prime is 805723717. The reversal of 805723673 is 376327508.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 414000409 + 391723264 = 20347^2 + 19792^2 .

It is a cyclic number.

It is not a de Polignac number, because 805723673 - 2² = 805723669 is a prime.

It is a super-2 number, since 2×805723673² = 1298381274465221858, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 805723673.

It is not a weakly prime, because it can be changed into another prime (805723643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402861836 + 402861837.

It is an arithmetic number, because the mean of its divisors is an integer number (402861837).

Almost surely, 2^805723673 is an apocalyptic number.

It is an amenable number.

805723673 is a deficient number, since it is larger than the sum of its proper divisors (1).

805723673 is an equidigital number, since it uses as much as digits as its factorization.

805723673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 41.

The square root of 805723673 is about 28385.2721142497. The cubic root of 805723673 is about 930.5264191226.

The spelling of 805723673 in words is "eight hundred five million, seven hundred twenty-three thousand, six hundred seventy-three".